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Protein

3-oxoacyl-[acyl-carrier-protein] synthase 3

Gene

fabH

Organism
Escherichia coli O1:K1 / APEC
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Catalyzes the condensation reaction of fatty acid synthesis by the addition to an acyl acceptor of two carbons from malonyl-ACP. Catalyzes the first condensation reaction which initiates fatty acid synthesis and may therefore play a role in governing the total rate of fatty acid production. Possesses both acetoacetyl-ACP synthase and acetyl transacylase activities. Its substrate specificity determines the biosynthesis of branched-chain and/or straight-chain of fatty acids.UniRule annotation

Catalytic activityi

Acetyl-CoA + malonyl-[acyl-carrier-protein] = acetoacetyl-[acyl-carrier-protein] + CoA + CO2.UniRule annotation

Pathwayi: fatty acid biosynthesis

This protein is involved in the pathway fatty acid biosynthesis, which is part of Lipid metabolism.UniRule annotation
View all proteins of this organism that are known to be involved in the pathway fatty acid biosynthesis and in Lipid metabolism.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Active sitei112UniRule annotation1
Active sitei244UniRule annotation1
Active sitei274UniRule annotation1

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Acyltransferase, Transferase

Keywords - Biological processi

Fatty acid biosynthesis, Fatty acid metabolism, Lipid biosynthesis, Lipid metabolism

Enzyme and pathway databases

UniPathwayiUPA00094.

Names & Taxonomyi

Protein namesi
Recommended name:
3-oxoacyl-[acyl-carrier-protein] synthase 3UniRule annotation (EC:2.3.1.180UniRule annotation)
Alternative name(s):
3-oxoacyl-[acyl-carrier-protein] synthase IIIUniRule annotation
Beta-ketoacyl-ACP synthase IIIUniRule annotation
Short name:
KAS IIIUniRule annotation
Gene namesi
Name:fabHUniRule annotation
Ordered Locus Names:Ecok1_09810
ORF Names:APECO1_172
OrganismiEscherichia coli O1:K1 / APEC
Taxonomic identifieri405955 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeEscherichia
Proteomesi
  • UP000008216 Componenti: Chromosome

Subcellular locationi

  • Cytoplasm UniRule annotation

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_10000563541 – 3173-oxoacyl-[acyl-carrier-protein] synthase 3Add BLAST317

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Structurei

3D structure databases

ProteinModelPortaliA1A9Y5.
SMRiA1A9Y5.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni245 – 249ACP-bindingUniRule annotation5

Domaini

The last Arg residue of the ACP-binding site is essential for the weak association between ACP/AcpP and FabH.UniRule annotation

Sequence similaritiesi

Belongs to the FabH family.UniRule annotation

Phylogenomic databases

HOGENOMiHOG000246674.
KOiK00648.
OMAiESGMYEN.

Family and domain databases

Gene3Di3.40.47.10. 2 hits.
HAMAPiMF_01815. FabH. 1 hit.
InterProiIPR013751. ACP_syn_III.
IPR013747. ACP_syn_III_C.
IPR004655. FabH_synth.
IPR016039. Thiolase-like.
[Graphical view]
PfamiPF08545. ACP_syn_III. 1 hit.
PF08541. ACP_syn_III_C. 1 hit.
[Graphical view]
SUPFAMiSSF53901. SSF53901. 1 hit.
TIGRFAMsiTIGR00747. fabH. 1 hit.

Sequencei

Sequence statusi: Complete.

A1A9Y5-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MYTKIIGTGS YLPEQVRTNA DLEKMVDTSD EWIVTRTGIR ERHIAAPNET
60 70 80 90 100
VSTMGFEAAT RAIEMAGIEK DQIGLIVVAT TSATHAFPSA ACQIQSMLGI
110 120 130 140 150
KGCPAFDVAA ACAGFTYALS VADQYVKSGA VKYALVVGSD VLARTCDPTD
160 170 180 190 200
RGTIIIFGDG AGAAVLAASE EPGIISTHLH ADGSYGELLT LPNADRVNPE
210 220 230 240 250
NSIHLTMAGN EVFKVAVTEL AHIVDETLAA NNLDRSQLDW LVPHQANLRI
260 270 280 290 300
ISATAKKLGM SMDNVVVTLD RHGNTSAASV PCALDEAVRD GRIKPGQLVL
310
LEAFGGGFTW GSALVRF
Length:317
Mass (Da):33,515
Last modified:January 23, 2007 - v1
Checksum:iBF3192CFF36023D3
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000468 Genomic DNA. Translation: ABJ00475.1.
RefSeqiWP_000288132.1. NC_008563.1.

Genome annotation databases

EnsemblBacteriaiABJ00475; ABJ00475; APECO1_172.
KEGGiecv:APECO1_172.
PATRICi18213616. VBIEscCol127180_1094.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000468 Genomic DNA. Translation: ABJ00475.1.
RefSeqiWP_000288132.1. NC_008563.1.

3D structure databases

ProteinModelPortaliA1A9Y5.
SMRiA1A9Y5.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABJ00475; ABJ00475; APECO1_172.
KEGGiecv:APECO1_172.
PATRICi18213616. VBIEscCol127180_1094.

Phylogenomic databases

HOGENOMiHOG000246674.
KOiK00648.
OMAiESGMYEN.

Enzyme and pathway databases

UniPathwayiUPA00094.

Family and domain databases

Gene3Di3.40.47.10. 2 hits.
HAMAPiMF_01815. FabH. 1 hit.
InterProiIPR013751. ACP_syn_III.
IPR013747. ACP_syn_III_C.
IPR004655. FabH_synth.
IPR016039. Thiolase-like.
[Graphical view]
PfamiPF08545. ACP_syn_III. 1 hit.
PF08541. ACP_syn_III_C. 1 hit.
[Graphical view]
SUPFAMiSSF53901. SSF53901. 1 hit.
TIGRFAMsiTIGR00747. fabH. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiFABH_ECOK1
AccessioniPrimary (citable) accession number: A1A9Y5
Entry historyi
Integrated into UniProtKB/Swiss-Prot: January 15, 2008
Last sequence update: January 23, 2007
Last modified: November 2, 2016
This is version 69 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Multifunctional enzyme

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.